The axons from the olfactory epithelium pass through <u>olfactory foramen in the cribriform plate of the ethmoid bone of skull </u>in order to get to the olfactory bulbs.
Explanation:
Olfactory foramina (also referred as cribriform foramina) are basically a number of wholes situated on the cribriform plate of the ethmoid bone in two depressions lateral to the median blade of cribriform plate (crista gilli) in the skull forming the roof of the nasal cavity.
The fibres of first cranial nerve being the olfactory nerve extends from the olfactory epithelium (axons of olfactory epithelium ) to the olfactory bulb through the <u>olfactory foramen in the cribriform plate of the ethmoid bone of skull</u> .
It would fly far alone. Because in the space is vacuum it would fly until it encountered something big. Than it could impactonthesurface of the planet or start circulate.